barbara starr is at the pentagon. you've been breaking this. tell us what you're learning tonight about david petraeus' testimony on benghazi. >> i've spoken to a source close to petraeus, directly familiar with petraeus' thinking on this matter. petraeus, we are told, wants to go to the hill, set the record straight and tell everything he knows. he will start by saying indeed that he knew almost immediately after that it was ansar al sharia, but there was also confusion. he had about 20 intelligence reports linking the attacks to that video, that anti-islamic video. those reports were disproven, but not until after he had briefed capitol hill. all of this took some time to sort out. that's what he wants to lay out tomorrow. >> and barbara, if he knew, and i know you're saying there were conflicting reports, which we have heard before, but if he knew and he's going to say he knew almost immediately it was the work of an al qaeda link ed militia, can he explain why susan right went on five talk shows and was very clear? >> the way it's going to